Reefer08
New member
As for the DIY 2-part. Not really for me. Unless Dow Chemicals guarantees the purity of the cal and mag I will stick to trusted sources. I don't see that happening as it is used primarily for driveway de-icing For some it may be fine but I'm not a gambler. I've invested 6+ years into my SPS collection and I have way too much to loose.
I agree I wouldn't trust the Dow Chemicals especially with the Bromide thats included in the mixture. I would just stick to bulkreefsupply for calcium and baked baking soda for alkalinity.